In the Classic client you could control the appearance of the grid on the subform. The TableBox properties contained a BorderColor property that when set to a Windows color (decimal) value allowed the developer to improve the contrast of the grid. See my attachment for an example.
I'm working on a client that is upgrading and wants the same "look". I've been looking at the List Page construction and its properties, and don't see any way to make the same change on three tier pages.
Does anyone know if it's possible and how?